Reland path bounds change with correct bounds for convex and hairline path renderers.

src/gpu/GrPathRenderer.h

Index: src/gpu/GrPathRenderer.h
diff --git a/src/gpu/GrPathRenderer.h b/src/gpu/GrPathRenderer.h
index ebd464ffb3af6585e63b7c2401d33eecec7189cd..3d4c993c5287669a69db770b4c4cc77c02d5cf12 100644
--- a/src/gpu/GrPathRenderer.h
+++ b/src/gpu/GrPathRenderer.h
@@ -1,4 +1,4 @@
-
+  
 /*
  * Copyright 2011 Google Inc.
  *
@@ -173,6 +173,22 @@ protected:
         this->drawPath(path, stroke, target, false);
     }
 
+    // Helper for getting the device bounds of a path. Inverse filled paths will have bounds set
+    // by devSize. Non-inverse path bounds will not necessarily be clipped to devSize.
+    static void GetPathDevBounds(const SkPath& path,
+                                 int devW,
+                                 int devH,
+                                 const SkMatrix& matrix,
+                                 SkRect* bounds);
+
+    // Helper version that gets the dev width and height from a GrSurface.
+    static void GetPathDevBounds(const SkPath& path,
+                                 const GrSurface* device,
+                                 const SkMatrix& matrix,
+                                 SkRect* bounds) {
+        GetPathDevBounds(path, device->width(), device->height(), matrix, bounds);
+    }
+
 private:
 
     typedef GrRefCnt INHERITED;